Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5169404 | Monoazo dyestuffs for the sublimation transfer process | Ulrich Buhler, Josef Ritter | 1992-12-08 |
| 5093307 | Use of water-insoluble monoazo dyes of the formula I | Ulrich Buhler, Josef Ritter | 1992-03-03 |